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我對Java EE相當陌生，剛開始使用tomcat。我正在用PrimeFaces開發一個小任務應用程序。基於表單的身份驗證的Tomcat 7領域配置
該應用程序具有受web.xml文件保護的主頁面和管理區域。當我根據這裏發佈的指南開發登錄頁面http://docs.oracle.com/cd/E19159-01/819-3669/bncby/index.html。儘管我已經正確配置了領域，但我無法登錄。
我在JSP web application form based authentication in tomcat上閱讀此帖，這正是我遇到的問題。但我沒有使用Eclipse。
這些是我的編碼和XML配置文件。
login.jsp頁面
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
<title>Log In</title>
</head>
<body>
<form method="post" action="j_security_check">
<p>Username</p>
<input type="text" name="j_username" />
<p>Password</p>
<input type="password" name="j_password" />
<p></p>
<input type="submit" value="Submit" /> <input type="reset"
value="reset" />
</form>
</body>
</html>
web.xml文件
<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://java.sun.com/xml/ns/javaee" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd" id="WebApp_ID" version="3.0">
<display-name>ToDoApplication</display-name>
<welcome-file-list>
<welcome-file>index.xhtml</welcome-file>
</welcome-file-list>
<!-- JSF Mapping -->
<servlet>
<servlet-name>Faces Servlet</servlet-name>
<servlet-class>javax.faces.webapp.FacesServlet</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>Faces Servlet</servlet-name>
<url-pattern>/faces/*</url-pattern>
</servlet-mapping>
<servlet-mapping>
<servlet-name>Faces Servlet</servlet-name>
<url-pattern>*.jsf</url-pattern>
</servlet-mapping>
<servlet-mapping>
<servlet-name>Faces Servlet</servlet-name>
<url-pattern>*.faces</url-pattern>
</servlet-mapping>
<servlet-mapping>
<servlet-name>Faces Servlet</servlet-name>
<url-pattern>*.xhtml</url-pattern>
</servlet-mapping>
<security-constraint>
<display-name>Main Login Auth</display-name>
<web-resource-collection>
<web-resource-name>Restricted Access</web-resource-name>
<url-pattern>/admin/*</url-pattern>
</web-resource-collection>
<auth-constraint>
<role-name>admin</role-name>
</auth-constraint>
<user-data-constraint>
<transport-guarantee>NONE</transport-guarantee>
</user-data-constraint>
</security-constraint>
<security-role>
<role-name>management</role-name>
</security-role>
<security-role>
<role-name>sales</role-name>
</security-role>
<security-role>
<role-name>admin</role-name>
</security-role>
<login-config>
<auth-method>FORM</auth-method>
<form-login-config>
<form-login-page>/login.jsp</form-login-page>
<form-error-page>/error.jsp</form-error-page>
</form-login-config>
</login-config>
</web-app>
這是我在tomcat的/ conf文件夾的server.xml。
<!-- Note: A "Server" is not itself a "Container", so you may not
define subcomponents such as "Valves" at this level.
Documentation at /docs/config/server.html
-->
<Server port="8005" shutdown="SHUTDOWN">
<!-- Security listener. Documentation at /docs/config/listeners.html
<Listener className="org.apache.catalina.security.SecurityListener" />
-->
<!--APR library loader. Documentation at /docs/apr.html -->
<Listener className="org.apache.catalina.core.AprLifecycleListener" SSLEngine="on" />
<!--Initialize Jasper prior to webapps are loaded. Documentation at /docs/jasper-howto.html -->
<Listener className="org.apache.catalina.core.JasperListener" />
<!-- Prevent memory leaks due to use of particular java/javax APIs-->
<Listener className="org.apache.catalina.core.JreMemoryLeakPreventionListener" />
<Listener className="org.apache.catalina.mbeans.GlobalResourcesLifecycleListener" />
<Listener className="org.apache.catalina.core.ThreadLocalLeakPreventionListener" />
<!-- Global JNDI resources
Documentation at /docs/jndi-resources-howto.html
-->
<GlobalNamingResources>
<!-- Editable user database that can also be used by
UserDatabaseRealm to authenticate users
-->
<Resource name="UserDatabase" auth="Container"
type="org.apache.catalina.UserDatabase"
description="User database that can be updated and saved"
factory="org.apache.catalina.users.MemoryUserDatabaseFactory"
pathname="conf/tomcat-users.xml" />
</GlobalNamingResources>
<!-- A "Service" is a collection of one or more "Connectors" that share
a single "Container" Note: A "Service" is not itself a "Container",
so you may not define subcomponents such as "Valves" at this level.
Documentation at /docs/config/service.html
-->
<Service name="Catalina">
<!--The connectors can use a shared executor, you can define one or more named thread pools-->
<!--
<Executor name="tomcatThreadPool" namePrefix="catalina-exec-"
maxThreads="150" minSpareThreads="4"/>
-->
<!-- A "Connector" represents an endpoint by which requests are received
and responses are returned. Documentation at :
Java HTTP Connector: /docs/config/http.html (blocking & non-blocking)
Java AJP Connector: /docs/config/ajp.html
APR (HTTP/AJP) Connector: /docs/apr.html
Define a non-SSL HTTP/1.1 Connector on port 8081
-->
<Connector port="8081" protocol="HTTP/1.1"
connectionTimeout="20000"
redirectPort="8443" />
<!-- A "Connector" using the shared thread pool-->
<!--
<Connector executor="tomcatThreadPool"
port="8080" protocol="HTTP/1.1"
connectionTimeout="20000"
redirectPort="8443" />
-->
<!-- Define a SSL HTTP/1.1 Connector on port 8443
This connector uses the BIO implementation that requires the JSSE
style configuration. When using the APR/native implementation, the
OpenSSL style configuration is required as described in the APR/native
documentation -->
<!--
<Connector port="8443" protocol="org.apache.coyote.http11.Http11Protocol"
maxThreads="150" SSLEnabled="true" scheme="https" secure="true"
clientAuth="false" sslProtocol="TLS" />
-->
<!-- Define an AJP 1.3 Connector on port 8009 -->
<Connector port="8009" protocol="AJP/1.3" redirectPort="8443" />
<!-- An Engine represents the entry point (within Catalina) that processes
every request. The Engine implementation for Tomcat stand alone
analyzes the HTTP headers included with the request, and passes them
on to the appropriate Host (virtual host).
Documentation at /docs/config/engine.html -->
<!-- You should set jvmRoute to support load-balancing via AJP ie :
<Engine name="Catalina" defaultHost="localhost" jvmRoute="jvm1">
-->
<Engine name="Catalina" defaultHost="localhost">
<!--For clustering, please take a look at documentation at:
/docs/cluster-howto.html (simple how to)
/docs/config/cluster.html (reference documentation) -->
<!--
<Cluster className="org.apache.catalina.ha.tcp.SimpleTcpCluster"/>
-->
<!-- Use the LockOutRealm to prevent attempts to guess user passwords
via a brute-force attack -->
<Realm className="org.apache.catalina.realm.LockOutRealm">
<!-- This Realm uses the UserDatabase configured in the global JNDI
resources under the key "UserDatabase". Any edits
that are performed against this UserDatabase are immediately
available for use by the Realm. -->
<Realm className="org.apache.catalina.realm.UserDatabaseRealm"
resourceName="UserDatabase"/>
</Realm>
<!-- Edited by Me while adding support to JDBC database configuration -->
<context path="/ToDoApplication" privileged="true" reloadable="true" cookies="true" debug="true">
<Realm className="org.apache.catalina.realm.JDBCRealm"
driverName="com.mysql.jdbc.Driver"
connectionURL="jdbc:mysql://localhost/todo?user=tomcat&password=tomcat"
userTable="users" userNameCol="username" userCredCol="password"
userRolesTable="user_roles" roleNameCol="rolename"/>
</context>
<!-- Editing finished -->
<Host name="localhost" appBase="webapps"
unpackWARs="true" autoDeploy="true">
<!-- SingleSignOn valve, share authentication between web applications
Documentation at: /docs/config/valve.html -->
<!--
<Valve className="org.apache.catalina.authenticator.SingleSignOn" />
-->
<!-- Access log processes all example.
Documentation at: /docs/config/valve.html
Note: The pattern used is equivalent to using pattern="common" -->
<Valve className="org.apache.catalina.valves.AccessLogValve" directory="logs"
prefix="localhost_access_log." suffix=".txt"
pattern="%h %l %u %t "%r" %s %b" />
</Host>
</Engine>
</Service>
</Server>
這就是我編寫數據庫表的方法，數據庫名爲'todo'。
mysql> SELECT * FROM users;
+----------+----------+
| username | password |
+----------+----------+
| lal | lal |
| lala | lala |
| mad | mada |
| nalaka | nalaka |
+----------+----------+
4 rows in set (0.00 sec)
mysql> SELECT * FROM user_roles;
+----------+------------+
| username | rolename |
+----------+------------+
| lal | sales |
| lala | management |
| lala | sales |
| mad | admin |
| nalaka | sales |
+----------+------------+
5 rows in set (0.00 sec)
我必須使用用戶瘋狂到我指定的角色爲管理員登錄到管理區的web.xml文件，因爲登錄。 當我分別使用用戶名和密碼作爲mad和mada時，我被重定向到錯誤頁面。這個URL附加了像這樣的j_security_check。
http://localhost:8081/ToDoApplication/admin/j_security_check
數據庫用戶tomcat對todo數據庫有SELECT權限。 tomcat指南提到，由於tomcat服務器不會寫入數據庫，用戶至少必須具有讀取權限。
有一個在您FacesServlet的配置中沒有* .JSP，但如果u是使用FacesServlet的，它需要是啊：形式/小時：體。使用JPA會更容易，但是當你使用sql時 - 你能顯示你的控制器登錄方法嗎？ – VeenarM
@VeenarM我將login.jsp更改爲login.xhtml，但仍然無效。關於h前綴，頁面呈現正確！ – LalakaJ
@VeenarM我想過使用JPA，但想試試tomcat的內置身份驗證。用於登錄的控制器方法是標準的j_security_check。我沒有明確指定控制器來處理登錄。 – LalakaJ